Sliding block.



' J. W. ROBERTS.

SLIDING BLOCK.

APPLICATION FILED JAN. 13, 1912.

1,039,807, Patented Oct. 1, 1912.

16 JW/wzs JOHN W. ROBERTS, 0F ASOTIN,.WASI-IINGTON.

SLIDING BLOCK.

Specification of Letters Patent.

Patented-Oct. 1, 1912.

Application filed. January 13, 1912. Serial No. 671,111.

To all whom it may concern:

Be it known that I, JOHN W. RoBnRTs, a citizen of the United States,residing at Asotin, in the county of Asotin and State of Washington,have invented certain new and useful improvements in Sliding Blocks, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to sliding blocks which are used in connectionwith the reversing gear of an engine, and the principal object of thesame. is to so construct the block that it may adjust itself to the sizeof the guide way in which it travels thus taking up all lost motion.

This invention comprises in brief a plurality of sections which are heldtogether by means of bolts and plates, the bolts limiting thelongitudinal movement of the sections and the plates limiting thetransverse movement.

This invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a perspective view of the im proved block. 2 is alongitudinal sectional view through the block. Fig. 3 is a perspectiveview of one of the plates used. Fig. 4- is a perspective view of theremaining plate used.

Referring to the accompanying drawings it will be seen that thisinvention comprises three sections 10, 11, and 12, the section 10 beingin longitudinal section an isosceles triangle, and the sections 11 and12 being right triangles. These sections are held together by bolts 13and plates 14 and 15, the bolts 13 limiting the longitudinal movement ofthe sections and the plates 14 and 15 limiting the transverse movement.The plate 14 extends across the base of the sections 11 and 12 and isprovided with side flanges 16 which extend along the sides of the block.The central portion of the plate is provided with a transverselyextending slot 17 and with longitudinally extending slots 18 above andbelow the slot 17. These slots 17 and 18 are so positioned that thepoint of the central section may pass through the slot 17 a limiteddistance and so that the bolts 13 may pass through the slots 18. Theplate 15 fits upon the opposite end of the block and is provided withthe side flanges 19 which extend along the sides of the block. Thecentral portion of the plate 15 is of the same height as the base of thesection 10, and the side flanges 19 extend above and below the centralsection so that they extend along the sides of the sections 11 and 12.The plate 15 is provided with a central opening 20 and with upper andlower openings 21, the ends of the bolts 13 passing through the openings21. Nuts 22 are screwed upon the ends of the bolts so that the bolts maybe held in place so as to limit the longitudinal move mentof thesections. The section 10 is provided with a longitudinally extendingthreaded opening 23 which communicates with a transversely extendingopening 24. The rod 25 has its threaded end 26 passing through theopening 20 into the opening 23, the rod being secured in place by meansof the lockingnut 27. The connecting rod pin 28 is mounted in theopening 24. This block is mounted in the guide way with the pitman rodsecured in the opening 23 and the nuts 22 are adjusted so that the blockis adjusted to the height of the guide way. After the engine has been inuse for some time the guide way and blocks become worn slightly and thesections 12 andll are then slid upon the section 10 so that the blockwill adjust itself 'to the height of the guide way. It will thus be seenthat this block will automatically adjust itself to the height of theguide way so that any slack will be taken up and all lost motion doneaway with. It should also be noted that the plates 14 and 15 prevent thesections from getting out of alinement with each other so that there isno danger of the blocks becoming caught or jammed in the guide way andalso takes the strain off of the bolts 13 so that there is no danger ofthe bolts becoming bent.

Having thus described, the invention, what is claimed as new, is

1. A block of the character described comprising a plurality ofsections, longitudinally extending bolts adjustably connecting saidsections, and platesmounted adjacent the ends of said bolts and providedwith side flanges extending along the sides of said block to limit thetransverse movement of said section.

2. A block of the character described comprising a central sectionhaving an isosceles triangular-shape in longitudinal section, a sectionabove and below said central section each having a right triangularshape in longitudinal section, longitudinally extending adjusting boltspassing through said sections, and plates mounted adjacent the ends ofsaid bolts and provided With side flanges extending along the sides ofsaid block.

3. A block of the character described comprising a central sectionhaving an isosceles triangular shape in longitudinal section, upper andlower sections fitting upon said central section and each having a righttriangular shape in longitudinal section, bolts passing through saidsections, a plate at one end of said block mounted upon said bolts, andprovided With a transversely extending slot through which the point ofsaid central section is adapted to pass, and a plate at the opposite endof said block mounted upon said bolts, said plates being provided Withside flanges extending along the sides of said block.

4. A block comprising a plurality of sections, one of said sectionsbeing provided With a transversely extending opening and with alongitudinally extending openin means for adjustably connecting saidsections together to limit the longitudinal movement thereof, and meansfor limiting the transverse movement of said sections.

In testimony whereof I hereunto aflix my signature in presence of twoWitnesses.

JOHN Vi. ROBERTS.

Witnesses E. L. FREEMAN, ED BUCKHOLZ.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

